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Medientyp:
E-Artikel
Titel:
Response of Orthoptera Species (Tettigoniidae and Acrididae) to Wildfires in a Central European Dry Grassland
Beteiligte:
Bieringer, Georg
Erschienen:
Orthopterists' Society, 2002
Erschienen in:Journal of Orthoptera Research
Sprache:
Englisch
ISSN:
1082-6467;
1937-2426
Entstehung:
Anmerkungen:
Beschreibung:
<p>The effects of wildfires on the Orthoptera fauna of extensive dry grasslands were investigated at 25 random sites in a military training area in Eastern Austria. Using a space-for-time substitution, a time span of 1 to about 20 y after fire was considered. Fire-induced trajectories of habitat characteristics such as microclimate proved to have a determining effect on the occurrence of most acridids and some tettigoniids. Dispersal capacity and fire-shelter characteristics of egg deposition sites did not significantly influence postburn occurrence patterns of the investigated species. Of a total of 20 species, seven were favored by wildfires, two were adversely affected by fire and eleven did not show significant responses to postburn age. Four species, amongst them Celes variabilis, which is highly endangered in Central Europe, can be considered fire-dependent in the study area. Therefore, fire can have beneficial effects for the conservation of acridid grasshoppers in particular. A reconsideration of the present legal ban on the use of prescribed burning in Central Europe is recommended.</p>